NEC SL1100 Features And Specifications Manual page 332

SL1100
To Cancel DND at a room telephone:
1. Lift the handset.
You hear stutter dial tone when you lift the handset.
2. Dial 628.
You hear confirmation tone.
3. Hang up.
To Enable DND at a room telephone:
H
Normally, only the supervisor's station has this ability.
1. Lift the handset.
2. Dial 629.
3. Dial the number of the extension for which you want to enable DND.
You hear confirmation tone.
4. Hang up.
To Cancel DND enabled at another room telephone:
Normally, only the supervisor's station has this ability.
1. Lift the handset.
2. Dial 630.
3. Dial the number of the extension for which you want to disable DND.
You hear confirmation tone.
4. Hang up.
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ISSUE 2.0
Hotel/Motel - Do Not Disturb